it looks like they work all on trannies only, but i think more ppl would take they're advice if they'd be bringin' huge hp cars out like ams,bushur, and rre. Because it's like when a new shop opens in your town and no1 wants to be the guinea pig, but everyone wants to know if they're good or not. So they wwait for some1 else to go and see what happens.
And someone mentioned that the evo 8 fuel pumps are kinda weak, does that also apply for the evo 9, or not really? And what you mean by weak, they should be one of your first upgrades if your building your car up, or they're just crappy from the factory?

 

th VIII are bad from the factory they dont pump well and have a history to fail. I had my stock pump in untill I did the turbo. I had all the easy bolt ons though so ehh well. the IX pump is much better you can use it for a while before needing a new one. although Id still plan on upgrading it